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Protein

B-phycoerythrin beta chain

Gene

cpeB

Organism
Porphyridium purpureum (Red alga) (Porphyridium cruentum)
Status
Reviewed-Annotation score: Annotation score: 4 out of 5-Experimental evidence at protein leveli

Functioni

Light-harvesting photosynthetic bile pigment-protein from the phycobiliprotein complex.

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Binding sitei50Phycourobilin chromophore (covalent; via 2 links)1
Binding sitei61Phycourobilin chromophore (covalent; via 2 links)1
Binding sitei82Phycoerythrobilin chromophore 1 (covalent; via 1 link)1
Binding sitei158Phycoerythrobilin chromophore 2 (covalent; via 1 link)1

GO - Biological processi

Complete GO annotation...

Keywords - Biological processi

Electron transport, Photosynthesis, Transport

Keywords - Ligandi

Bile pigment, Chromophore

Names & Taxonomyi

Protein namesi
Recommended name:
B-phycoerythrin beta chain
Gene namesi
Name:cpeB
Encoded oniPlastid; Chloroplast
OrganismiPorphyridium purpureum (Red alga) (Porphyridium cruentum)
Taxonomic identifieri35688 [NCBI]
Taxonomic lineageiEukaryotaRhodophytaBangiophyceaePorphyridialesPorphyridiaceaePorphyridium

Subcellular locationi

GO - Cellular componenti

Complete GO annotation...

Keywords - Cellular componenti

Chloroplast, Membrane, Phycobilisome, Plastid, Thylakoid

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00001991941 – 177B-phycoerythrin beta chainAdd BLAST177

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Modified residuei72N4-methylasparagine1 Publication1

Post-translational modificationi

Contains two covalently linked phycoerythrobilin chromophores and one covalently linked phycourobilin chromophore.

Keywords - PTMi

Methylation

Interactioni

Subunit structurei

Heteropolymer of 6 alpha, 6 beta and one gamma chain.By similarity

Protein-protein interaction databases

IntActiP11393. 1 interactor.
MINTiMINT-8389580.

Structurei

Secondary structure

1177
Legend: HelixTurnBeta strandPDB Structure known for this area
Show more details
Feature keyPosition(s)DescriptionActionsGraphical viewLength
Helixi4 – 14Combined sources11
Helixi21 – 32Combined sources12
Helixi34 – 45Combined sources12
Helixi48 – 62Combined sources15
Helixi64 – 67Combined sources4
Helixi76 – 99Combined sources24
Helixi103 – 108Combined sources6
Turni109 – 112Combined sources4
Helixi113 – 120Combined sources8
Helixi124 – 142Combined sources19
Helixi159 – 176Combined sources18

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
3V57X-ray1.70B/D1-177[»]
3V58X-ray1.85B/D1-177[»]
ProteinModelPortaliP11393.
SMRiP11393.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

Belongs to the phycobiliprotein family.Curated

Family and domain databases

Gene3Di1.10.490.20. 1 hit.
InterProiIPR009050. Globin-like.
IPR012128. Phycobilisome_asu/bsu.
[Graphical view]
PfamiPF00502. Phycobilisome. 1 hit.
[Graphical view]
PIRSFiPIRSF000081. Phycocyanin. 1 hit.
SUPFAMiSSF46458. SSF46458. 1 hit.

Sequencei

Sequence statusi: Complete.

P11393-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MLDAFSRVVV NSDAKAAYVG GSDLQALKSF IADGNKRLDA VNSIVSNASC
60 70 80 90 100
MVSDAVSGMI CENPGLISPG GNCYTNRRMA ACLRDGEIIL RYVSYALLAG
110 120 130 140 150
DASVLEDRCL NGLKETYIAL GVPTNSSIRA VSIMKAQAVA FITNTATERK
160 170
MSFAAGDCTS LASEVASYFD RVGAAIS
Length:177
Mass (Da):18,554
Last modified:July 1, 1989 - v1
Checksum:i168E71372A29CD89
GO

Experimental Info

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Sequence conflicti167S → Q AA sequence (PubMed:6715353).Curated1

Sequence databases

PIRiS02818.
RefSeqiYP_008965770.1. NC_023133.1.

Genome annotation databases

GeneIDi17963946.

Cross-referencesi

Sequence databases

PIRiS02818.
RefSeqiYP_008965770.1. NC_023133.1.

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
3V57X-ray1.70B/D1-177[»]
3V58X-ray1.85B/D1-177[»]
ProteinModelPortaliP11393.
SMRiP11393.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

IntActiP11393. 1 interactor.
MINTiMINT-8389580.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

GeneIDi17963946.

Family and domain databases

Gene3Di1.10.490.20. 1 hit.
InterProiIPR009050. Globin-like.
IPR012128. Phycobilisome_asu/bsu.
[Graphical view]
PfamiPF00502. Phycobilisome. 1 hit.
[Graphical view]
PIRSFiPIRSF000081. Phycocyanin. 1 hit.
SUPFAMiSSF46458. SSF46458. 1 hit.
ProtoNetiSearch...

Entry informationi

Entry nameiPHEB_PORPP
AccessioniPrimary (citable) accession number: P11393
Entry historyi
Integrated into UniProtKB/Swiss-Prot: July 1, 1989
Last sequence update: July 1, 1989
Last modified: November 2, 2016
This is version 86 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)

Miscellaneousi

Keywords - Technical termi

3D-structure, Direct protein sequencing

Documents

  1. PDB cross-references
    Index of Protein Data Bank (PDB) cross-references
  2. SIMILARITY comments
    Index of protein domains and families

Similar proteinsi

Links to similar proteins from the UniProt Reference Clusters (UniRef) at 100%, 90% and 50% sequence identity:
100%UniRef100 combines identical sequences and sub-fragments with 11 or more residues from any organism into one UniRef entry.
90%UniRef90 is built by clustering UniRef100 sequences that have at least 90% sequence identity to, and 80% overlap with, the longest sequence (a.k.a seed sequence).
50%UniRef50 is built by clustering UniRef90 seed sequences that have at least 50% sequence identity to, and 80% overlap with, the longest sequence in the cluster.